How to encode and sign a JWT in Ruby

Step-by-step Ruby guide to encode and sign a JWT. Use the browser tool for quick testing, then integrate the snippet into your application.

Steps

  1. 1

    Open the jwt encoder tool and generate or process your value in the browser.

  2. 2

    Copy the output — nothing is sent to a server; all processing is client-side.

  3. 3

    Store secrets in environment variables or a secrets manager, never in source code.

  4. 4

    Integrate the Ruby snippet below into your application.

  5. 5

    Test end-to-end before deploying to production.

Code Example

Ruby
token = JWT.encode({ sub: 'user-1' }, secret, 'HS256')
Open JWT Encoder

Other languages

Node.jsPythonGoJavaRuby

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Jwt For Beginners Complete GuideWhat Is Jwt

Frequently Asked Questions

Is it safe to use the browser tool for encode and sign a JWT?

Yes. All computation uses Web Crypto in your browser. No keys or tokens are transmitted to any server.

Can I use this Ruby code in production?

Yes, with proper secret storage. Replace placeholder values with environment variables and follow security best practices.